Question

Two circular coils mounted parallel to each other on the same axis carry steady currents. If an observer between the two coils reports that one coil carrying a clockwise current i, while other is carrying a counter clockwise current i, between the two coils, then there is
1. Steady repulsive force
2. Zero force
3. A repulsive force
4. A steady attractive force

Answer 1

Answer:

Option 4) steady force of attractive nature.

Explanation:

Since, in the question it is given as the first circular coil is having current in the anticlockwise direction which will be equivalent to a magnet having poles as SN and the other coil in which the current is moving in clockwise direction will be equivalent to a magnet with SN polarity.

So, we get that the poles N and S are in opposite side hence, there will be an attractive force of steady nature.